What does the author imply by \”Until now such bonds have largely been the preserve of rich-country is-suers\” ( Line 3-4, Para.2) ?（ ）
[A] The catastrophe bonds are mainly reserved by rich countries.
[B] Only rich countries have the ability to issue the catastrophe bonds.
[C] Rich countries seldom issue the catastrophe bonds.
[D] Most of the catastrophe bonds are raised in rich countries.
正确答案：B
